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PSYCH/625 Version 2 Time to Practice � Week Four University of Phoenix Material

A set of practice problems designed to reinforce psychological concepts from Week Four of PSYCH/625.

Benjamin Clark
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Time to Practice–Week FourPSYCH/625 Version 21Copyright ©2014by University of Phoenix. All rights reserved.PSYCH/625 Version 2 Time to Practice–Week FourUniversity of Phoenix MaterialTime to Practice–Week FourCompleteParts A, B, and C below.Part ASome questions in Part A require that you access data fromStatistics for People Who (ThinkThey) HateStatistics.This data is available on the student website under the Student Text Resources link.1.Using the data in the file named Ch.11 Data Set 2, test the research hypothesis at the .05 level ofsignificance that boys raise their hands in class more often than girls. Do this practice problem byhand using a calculator. What is your conclusion regarding the research hypothesis? Remember tofirst decide whether this is a one-or two-tailed test.This is a one-tailed test because you want to determine if the mean of one group (boys)–μ1-is higher than the mean of the second group(girls)–μ2.Null hypothesis:μ1 =μ2Alternativehypothesis:μ1 >μ2BoysX-Mean(X-Mean)291.0714291.14795980.0714290.0051024-3.9285715.4336791.0714291.1479593-4.9285724.2908280.0714290.005102102.0714294.29081680.0714290.00510291.0714291.14795980.0714290.005102102.0714294.2908167-0.928570.8622456-1.928573.719388124.07142916.57653Sum = 111Sum = 72.93Mean = 7.93S2= 72.93 / 13 = 5.61GirlsX-Mean(X-Mean)23-2.31255.3476565-0.31250.0976561-4.312518.597662-3.312510.9726660.68750.4726564-1.31251.722656

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Document Details

University
University of Phoenix
Course
PSYCH 625
Subject
Psychology

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